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[PATCH] Fix some ucLinux breakage from the tty updates 

Breakage reported by Adrian Bunk

Untested (no hardware)

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Alan Cox 2006-02-03 03:04:08 -08:00 committed by Linus Torvalds
parent 84542838a3
commit 8145916996
3 changed files with 12 additions and 20 deletions
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25
arch/v850/kernel/simcons.c
View File

@ -117,6 +117,7 @@ late_initcall(simcons_tty_init);
tty driver. */
void simcons_poll_tty (struct tty_struct *tty)
{
char buf[32]; /* Not the nicest way to do it but I need it correct first */
int flip = 0, send_break = 0;
struct pollfd pfd;
pfd.fd = 0;
@ -124,21 +125,15 @@ void simcons_poll_tty (struct tty_struct *tty)
if (V850_SIM_SYSCALL (poll, &pfd, 1, 0) > 0) {
if (pfd.revents & POLLIN) {
int left = TTY_FLIPBUF_SIZE - tty->flip.count;
if (left > 0) {
unsigned char *buf = tty->flip.char_buf_ptr;
int rd = V850_SIM_SYSCALL (read, 0, buf, left);
if (rd > 0) {
tty->flip.count += rd;
tty->flip.char_buf_ptr += rd;
memset (tty->flip.flag_buf_ptr, 0, rd);
tty->flip.flag_buf_ptr += rd;
flip = 1;
} else
send_break = 1;
}
/* Real block hardware knows the transfer size before
transfer so the new tty buffering doesn't try to handle
this rather weird simulator specific case well */
int rd = V850_SIM_SYSCALL (read, 0, buf, 32);
if (rd > 0) {
tty_insert_flip_string(tty, buf, rd);
flip = 1;
} else
send_break = 1;
} else if (pfd.revents & POLLERR)
send_break = 1;
}

4
arch/xtensa/platform-iss/console.c
View File

@ -128,9 +128,7 @@ static void rs_poll(unsigned long priv)
while (__simc(SYS_select_one, 0, XTISS_SELECT_ONE_READ, (int)&tv,0,0)){
__simc (SYS_read, 0, (unsigned long)&c, 1, 0, 0);
tty->flip.count++;
*tty->flip.char_buf_ptr++ = c;
*tty->flip.flag_buf_ptr++ = TTY_NORMAL;
tty_insert_flip_char(tty, c, TTY_NORMAL);
i++;
}

3
drivers/serial/mcfserial.c
View File

@ -350,8 +350,7 @@ static inline void receive_chars(struct mcf_serial *info)
}
tty_insert_flip_char(tty, ch, flag);
}
schedule_work(&tty->flip.work);
tty_flip_buffer_push(tty);
return;
}